Pencil sharpener



= so that they recede Patented Dec. 1, 1931 MARK ANTHONY, orcnnvnmivnjoif r'rmcrn swam 5 Application filed April 23,

' To the end of providing a pencil sharpener which maybe easily andreadily made, this invention is primarily directed. .My novel 1928.Serial m. 272,021.

idea is to fashion from a blank of metal by 'LU any appropriate metalWorking process, such as stamping, apiece of metal havingconfigurationof such character that when it is rolled up or put incylindrical form, it will have assumed all the requisite characteristics1c of thesharpener or pointer. a

While the method of manufacturing the pencil pointers is one of theprincipal fea tures of this invention, this method, because ofitssimplicity and ease of carrying out, 15 has enabled me to include in theconstruction of a sharpener, several salient points of novelty fromwhich h-ighlybeneficial results are derived when the device is used. Bydesigning the extremities ofthe cutting edges or assume anangular'relation with respect to the remainder of the cutting blade,liability of the breaking. of the lead point or the Wood at the end ofthe cut portionthereof, is practically obviated. For the efiicientoperation of, a pencil sharpener, it is essential that a pencil besharpened without necessitating aprolonged operation to give the desiredresults, and it is therefore highly desirable to have the main cuttingedges extend longitudinally of a penoil on which it is to operate. Sucha condition ordinarily would cause unsatisfactory results because thelead point is constantly broken and the wood marred and frayed. However,I have overcome the disadvantages accompanying the arrangement of thecutting edges, which permits of the most efficient operation of a pencilsharpener device, by causing the extremities to become inclined with 9the remainder of the said cutting edges.

The present invention comprehends the use of a casing or carrier for theshapener, this casing having a double function in that it constitutes asupport or carrier for the eraser.

A detailed object of the invention is to provide means for determiningthe condition of a. pencil being operated on by the sharpener. Inachieving this object, the caslng 1s .5 provided with keyhole slots insubstantial alignment with the cutting. edges. of. the sharpening deviceproper so that the same is rendered visible during all stages ofoperation, The invention includes further and more detailed objects andadvantages as will in part become apparentand in part'behereinafterstated. r *1 For a full and more complete understanding of theinvention, reference may be had to I6 the following .description andaccompanying. drawings, lIl WhlCh- .7 Fig. 1 is a perspective viewshowing aformof easing in-which the'novel sharpeningdevice is received.T. 3 f 1 Fig. 2i's aside elevation of the sharpening device itself,which is adapted for insertion in the casing of Fig. 1. V I

Fig. 3 is alongitudinal section through the the shapener, in'elevation,

easing, showing insertedtherein. i a Fig. 41.18 a detailed view inperspective of an eraser adapted to cooperate with the casingandsharpener. 4

While only a preferred, specific embodiment of the invention is hereinset forth, it

is to be understood that I am not to be limof'these details maybeprovided in putting ited to the exact constructions illustratedand-described, because various modifications a 0 u n 0 the lnvention ntopractice w thin the purview of theappended claims.

i In making a pencil sharpener in accordance with this invention, ablank of suitable metal is first fashioned to the desired shape '85 byany approvedprocess such as stamping.

After the blank is shaped, it. is, put into cylindrical cond-itionfbythe preferred process such as rolling or. deforming. the metal, therebyforming a pair ofmating edges which 7 may be welded together; orIif'theblankbe made from soft iron, as' is desirable, the rolled blankmay be tempered to causeit to retain the rolled-condition. r

The .finished sharpener comprises a cylin- D! -drical portion l .anda.'conioalportion,2.

The .conical, portion is providedwithrecesses or slots 3, each havingone side proper- .ly disposed to constitute .acuttingedge 4.

By referring particularly to Figures 1 and2, 10C

what o posite direction. That is, at 6 the 7 incline blade precedes theedat D.

1 will it will be note-d that the cutting edge 4 recedes at the point toprovide acutting edge inclined with respect to the remainder thereof asshown at 5. This same thought is carried out at the other extremity oftheedges as shown at 6 but the inclination is in a somemain cuttingblade while at 5 it follows it, speaking relative to operation of thesharpening device; Needless to say, the recesses 3 permit 01" the"removaland dispensing of cut portions ofthe The completed sharpener isindicat pencil.

A- main casing of anysuitable metal referred to'generally as E,comprises a cylindrical' .portionj8, a frusto-pyramidal portion 9, and arectangular portionlO. The

7 portion 10 is designed to receive and hold an eraser shown in igure 4w and given the reference character 11.

. The'cylindrical portion 8 terminates in an in-turned flange. 12 thatfunctions as a sup-- p'ort and retainer: for the sharpening device Dwhen the various parts are 'co-mpletely'as- .sembled as shown inFigure3."Slots 13 of keyhole formation areprovided in the casing E atopposite'points and extend throughout length of the portion 9 and partlyinto the cylindrical portion 8 and rectangular portion 10. These slotsare-substantially aligned withthe recesses 3 in the sharpening device Dso as to render thesaidrecesses' visible. For the purpose of holding thevariousparts of the finished sharpener in their assembled relation, Ipreferto avail of some metalhaw ingproperties of resiliency so that thein- .herent resiliency :of the metal of the casing D-to remain in theirproper positions.

Having thus described my invention, what cause the eraser and sharpeningdevice 1 having keyhole slots therein, a sharpener positioned within thecasing and secured in p0- sition therein, the sharpening device having atapering part projecting into the tapered portion of the casing andhaving slots in substantial alignment with the slots in the easingtorender visible at all times a pencil beingoperated uponby thesharpener and forming means of egress for pencil 'shavings,,the.sharpener also having main cutting edges extending longitudinally of thepencil being pointed, the extremities of the cutting edges beingangularly inclined with respect to the'remainder 'of' the cutting edges.

, '3. A combination pencil sharpener and eraser holder of theclassdescribed, com-V prising a casing having a cylindrical portion, afrusto-pyramidal portion merging into the cylindrical portion, arectangularly shaped socket portion united withthe pyramidal portion,the pyramidal portion having oppositely rdisposed slots therein, asharpener. with-r in'the casing and secured in position within thecylindrical portion and having a regularly tapered part projecting" intothe pyramidal portion of the casing, the point of the I claim as new anddesire to secure by Leti tersPatent in theUnited States,is: vclass'described,

1 A pencil sharpener of the comprising, in combination, slots therein,interiorly tion therein,the said'sharpening device havacasing having asharpenlng device posltioned ing slots'there'in in substantial alignmentwith the slots in the casing to render visible at all times apencilbeingsharpened, the

sharpening device being provided with main cutting edges extendinglongitudinally of the pencil being sharpened, the extremities of thecutting edges being angularly inclined with respect to theremainder ofthe cutting pencil. a o

2. A combination pencil sharpener and eraser holderwof the classdescribed, comprismg a casing and an enlarged rectangular socket portionconstituting asocket for an eraser, a tapered of the casing and securedin posihaving a cylind'rical portion,

'edges'to' prevent breakingof the point of the portion intermediate thecylindrical and rec- 1 tangular'portions, the said tapered portion

